My dad brought home a Hamilton just like this in 1958. I believe that it was maybe 8 to 10 years old at the time. He had done some re-modeling work for an apartment house complex in West LA and 6 of these machines were being thrown away. They had been used in the laundry room and had been coin operated. It didn't have a lint trap so he installed it on our covered patio just outside of the laundry room door. It could dry a load of jeans in 30 minutes! It had a "modulating" burner and standing pilot. The bracket that held the temperature sensing device, in the drum, broke off and the sensor was damaged. This, then, caused the burner to operate at full blast. We discovered this when a load of dad's white T-shirts and socks came out scorched. The part was no longer available, so Dad just adjusted the gas supply valve so that the burner only fired up half way. It took longer to dry a load but it beat hanging up clothes on the line. It finally died for good in 1975 and went to the land fill.